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"First published in the Library of Health for Aug. and Sept."

Breathing bad air -- Franklin's views of bad air, Anecdote -- Common sense views. Dr. Caspar of Berlin -- Why farming is comparatively healthy -- The atmosphere. Respiration of breathing. Blood -- Carbonic acid gas--its uses and dangers -- Death in wells, mines, caves, &c. -- Death from charcoal -- Black Hole at Calcutta -- Prison ships, slave ships and hospitals -- Improved jails, penitentiaries, school-rooms, &c. -- Mortality of children -- Directions to mothers -- Important facts in Physiology -- Opinions of Dr. Clark and Thackrah ..

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